Würth | Engine Flush and Cleaner for 5L Oil - 400mL

Würth Engine Flush & Cleaner 400mL is a high-performance technical chemical solution engineered with advanced German technology specifically to purge internal sludge and built-up contaminants from combustion engines. Designed to treat the oil crankcase directly before a routine maintenance flush, this highly efficient agent liquefies carbon residues, gum, and varnish accumulations from oil galleries and internal component surfaces. By clearing structural blockages within the lubrication cycle, it significantly optimizes the flow velocity of fresh motor oil, curtails mechanical friction, and restores baseline engine output while boosting overall fuel economy parameters.

Product Specifications:

• Brand: Würth

• Product Type: Internal Engine Flush & Sludge Cleaning Additive

• Volume: 400 mL 

• Country of Origin: Germany

Key Features & Performance:

• Dissolves Hardened Sludge & Carbon: Rapidly breaks down and flushes away performance-robbing lacquer and gummy carbon deposits inside the engine block.

• Optimizes Oil Flow & Limits Drag: Eliminates restricted fluid pathways, promoting rapid circulation of fresh lubricant and significantly minimizing frictional wear.

• Restores Horsepower & Efficiency: Deep mechanical cleaning re-establishes original compression seals, boosting engine performance and reducing structural fuel consumption.

• Anti-Oxidation & Rust Shielding: Buffers internal bare-metal components against high-temperature oil oxidation, halting the spread of internal corrosion and rust.

• Curtails Harmful Exhaust Emissions: Clears deposit buildup around sensitive ring lands and valve assemblies, leading to a marked decrease in hazardous exhaust emissions.

• User-Friendly Implementation: Can be easily deployed without specialized workshop machinery or heavy manual disassembly tools.

Usage Instructions:

• Turn on the vehicle ignition and let the engine idle for approximately 10 minutes to reach its normal operating temperature.

• Add the entire 400mL canister of engine flush cleaner directly through the oil filler cap into the warm, used motor oil (this 400mL volume treats up to 5 liters of oil, whereas a 1-liter variant treats 10 to 15 liters depending on your vehicle's oil pan capacity).

• Allow the engine to idle continuously for another 10 to 15 minutes (Do not drive the vehicle or rev the engine during this chemical cycle).

• Shut down the engine completely, drain the contaminated oil along with the flush fluid while still warm, replace the oil filter, and refill with fresh new motor oil.

Suitability & Applications:

• Fully engineered for use across all modern and classic gasoline and diesel powertrains; compatible with all standard mineral, semi-synthetic, and fully synthetic oils, and completely safe for turbocharged systems and catalytic converters.

Note:

This formula is an aggressive, temporary purging compound engineered exclusively for stationary cleaning before oil changes; never drive the vehicle or subject the engine to load while this product is inside the crankcase. The used oil must be drained immediately and the oil filter replaced once the idling flushing stage concludes. Do not add this product to the fuel tank or cooling systems.

 Revitalize your engine’s internal fluid channels and restore factory-level efficiency with advanced German engineering! Buy the original Würth Engine Flush & Cleaner (400mL) today from CarBoost.